Anonymous wrote:That's not true at all. A typical one will be rated for 7 hours of run time. That's total run time. They typically run about 10 seconds at a time, until the basin fills up again. It can run for several days, if not a week at that rate. Water powered back-ups are a very bad idea and waste a LOT of water to run the pump. Can't be used with well water, obviously.Anonymous wrote:Fyi battery backups don't last that long - only 6-8 hours. The water pressure system is more expensive, but can run indefinitely during a power outage.
I work in this industry and I've never seen a pump run 60 seconds to empty a typical sump basin with typical 1/3 HP pump unless it's a water powered pump which is a very low volume per minute pump. And we use a very large basin. The water powered pumps are very under-powered compared to a battery pump. The GPH rating is about half that of a battery back-up pump and the installation is a lot more involved and expensive. We typically see about 8 years from a battery and the pumps last nearly forever because they are only used as back-up.Anonymous wrote:Anonymous wrote:That's not true at all. A typical one will be rated for 7 hours of run time. That's total run time. They typically run about 10 seconds at a time, until the basin fills up again. It can run for several days, if not a week at that rate. Water powered back-ups are a very bad idea and waste a LOT of water to run the pump. Can't be used with well water, obviously.Anonymous wrote:Fyi battery backups don't last that long - only 6-8 hours. The water pressure system is more expensive, but can run indefinitely during a power outage.
No they are not a bad idea. They are much more reliable than a battery. And a typical crock takes 60 seconds to empty, not 10. The battery backup also doesn't power the main pump. It runs a much smaller pump that is easily overpowered during heavy rains.
It is true that municipal water powered pumps use city water to drain the crock (about one gallon of city water to pull two gallons from the crock) but they drain as quickly as your main pump, can't be over powered and essentially never fail. Most people are fine with spending $0.12 in water to keep their basement dry during a power outage. Keep in mind that deep cell marine batteries used to power battery back up pumps run about $300 and last for 5 years at best, more like 3 years usually. You'd have to run the water pump for three months straight to use $300 of water where I live.
Anonymous wrote:Anonymous wrote:That's not true at all. A typical one will be rated for 7 hours of run time. That's total run time. They typically run about 10 seconds at a time, until the basin fills up again. It can run for several days, if not a week at that rate. Water powered back-ups are a very bad idea and waste a LOT of water to run the pump. Can't be used with well water, obviously.Anonymous wrote:Fyi battery backups don't last that long - only 6-8 hours. The water pressure system is more expensive, but can run indefinitely during a power outage.
No they are not a bad idea. They are much more reliable than a battery. And a typical crock takes 60 seconds to empty, not 10. The battery backup also doesn't power the main pump. It runs a much smaller pump that is easily overpowered during heavy rains.
It is true that municipal water powered pumps use city water to drain the crock (about one gallon of city water to pull two gallons from the crock) but they drain as quickly as your main pump, can't be over powered and essentially never fail. Most people are fine with spending $0.12 in water to keep their basement dry during a power outage. Keep in mind that deep cell marine batteries used to power battery back up pumps run about $300 and last for 5 years at best, more like 3 years usually. You'd have to run the water pump for three months straight to use $300 of water where I live.
Anonymous wrote:That's not true at all. A typical one will be rated for 7 hours of run time. That's total run time. They typically run about 10 seconds at a time, until the basin fills up again. It can run for several days, if not a week at that rate. Water powered back-ups are a very bad idea and waste a LOT of water to run the pump. Can't be used with well water, obviously.Anonymous wrote:Fyi battery backups don't last that long - only 6-8 hours. The water pressure system is more expensive, but can run indefinitely during a power outage.
That's not true at all. A typical one will be rated for 7 hours of run time. That's total run time. They typically run about 10 seconds at a time, until the basin fills up again. It can run for several days, if not a week at that rate. Water powered back-ups are a very bad idea and waste a LOT of water to run the pump. Can't be used with well water, obviously.Anonymous wrote:Fyi battery backups don't last that long - only 6-8 hours. The water pressure system is more expensive, but can run indefinitely during a power outage.
Anonymous wrote:ME Flow did ours a few weeks ago (our old one failed in heavy rain and flooded our basement-ugh!). It was almost exactly $1500 for the unit plus battery backup.